<template>
  <li>
    <label>
      <input
        type="checkbox"
        :checked="todo.done"
        @change="handleCheck(todo.id)"
      />
      <!-- 如下代码也能实现功能，但是不太推荐，因为有点违反原则，这修改了pros,更改了对象里面的值，但是没有被Vue2（object.defineProperty）所检测到 -->
      <!-- <input type="text" v-model="todo.done"> -->
      <span>{{todo.title}}</span>
    </label>
    <button
      class="btn btn-danger"
      @click="handleDelete(todo.id)"
    >删除</button>
  </li>
</template>

<script>
export default {
  name: 'MyItem',
  props: ['todo'],
  data() {
    return {

    }
  },
  methods: {
    //勾选或者取消勾选
    handleCheck(id) {
      //通知app组件将对应的todo对象的done值取反
      // this.checkTodo(id);
      this.$bus.$emit('checkTodo', id)
    },
    //删除todo
    handleDelete(id) {
      if (confirm('确定删除吗？')) {
        //通知app组件将对应的todo从todos中删除
        // this.deleteTodo(id);
        this.$bus.$emit('deleteTodo', id)
      }
    }
  },
}
</script>

<style scoped>
/*item*/
li {
  list-style: none;
  height: 36px;
  line-height: 36px;
  padding: 0 5px;
  border-bottom: 1px solid #ddd;
}

li label {
  float: left;
  cursor: pointer;
}

li label li input {
  vertical-align: middle;
  margin-right: 6px;
  position: relative;
  top: -1px;
}

li button {
  float: right;
  display: none;
  margin-top: 6px;
}

li:before {
  content: initial;
}

li:last-child {
  border-bottom: none;
}

li:hover {
  background-color: skyblue;
}

.btn {
  padding: 2px 8px;
  cursor: pointer;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

li:hover button {
  display: block;
}
</style>